US5234500A - Liquid distribution system for photographic coating device - Google Patents

Liquid distribution system for photographic coating device Download PDF

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Publication number
US5234500A
US5234500A US07/766,945 US76694591A US5234500A US 5234500 A US5234500 A US 5234500A US 76694591 A US76694591 A US 76694591A US 5234500 A US5234500 A US 5234500A
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United States
Prior art keywords
distribution channel
liquid
secondary distribution
outlet
inlet
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Expired - Lifetime
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US07/766,945
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English (en)
Inventor
Solomon T. Korokeyi
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Eastman Kodak Co
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Eastman Kodak Co
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Assigned to EASTMAN KODAK COMPANY reassignment EASTMAN KODAK COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KOROKEYI, SOLOMON T.
Priority to US07/766,945 priority Critical patent/US5234500A/en
Priority to CA002076276A priority patent/CA2076276C/en
Priority to AU21151/92A priority patent/AU655050B2/en
Priority to EP92420313A priority patent/EP0534869B1/en
Priority to DE69225185T priority patent/DE69225185T2/de
Priority to BR929203725A priority patent/BR9203725A/pt
Priority to MX9205485A priority patent/MX9205485A/es
Priority to JP04256726A priority patent/JP3118095B2/ja
Publication of US5234500A publication Critical patent/US5234500A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B05C5/008—Slide-hopper curtain coaters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/06—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • G03C2001/7466—Geometry and shape of application devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • G03C2001/7492—Slide hopper for head or curtain coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/04—Curtain coater

Definitions

  • the present invention relates to a device for applying liquid photographic coatings to a paper or film support.
  • photographic film or paper it is necessary to coat the film support or paper with discrete layers of photographic coatings.
  • Some of these layers contain a radiation sensitive material like silver halides, zinc oxide, titanium dioxide, diazonium salts, and light sensitive dyes as well as other photographic additives including matting agents, developing agents, mordants, etc.
  • Other layers may contain materials which are not radiation sensitive like subbing layers, pelloid protective layers, filter layers, antihalation layers, and interlayers.
  • hydrophilic colloids, polysaccharides, surfactants and synthetic polymers may also be incorporated in photographic coating liquids.
  • the number of separate and discrete layers of photographic coatings applied to photographic paper or film support depends on the product's design. Typically, the number of layers varies between 1 to 15, more usually 3 to 13.
  • a multi-slide hopper is a known apparatus which will simultaneously coat two or more liquids onto a solid support in such a way that the layers are not mixed and are individually of uniform thickness.
  • the conventional slide hopper performs its coating operation by metering a first coating liquid from a supply through a narrow slot which distributes the liquid uniformly across the top of a downwardly inclined slide surface. This layer of liquid moves down the slide surface by gravity to supply a steady, uniform, smooth coating layer to a coating bead across which it is applied to the web being coated.
  • a second coating liquid is supplied to and distributed by, a second slot which directs a uniform layer of that liquid onto the top of a second slide surface.
  • the second coating liquid first flows down its own slide surface and then onto the top of the layer of liquid issuing from the first slot.
  • the layers of the first and the second liquids then together flow down to a coating bead where they are applied to the web. Additional liquids may be coated simultaneously by equipping the hopper with the appropriate number of slots and slide surfaces.
  • multi-layer photographic coatings can be applied by passing the web beneath a liquid curtain formed by discharging the coating liquid from a terminal lip portion of the multi-slide hopper.
  • bead coating and curtain coating techniques are well known, as disclosed e.g., in U.S. Pat. No. 4,287,240 to O'Connor.
  • Photographic liquids are generally pumped from a supply to a slot at the hopper's slide surface through passages in the coating hopper.
  • the passages include one or more transverse distribution channels.
  • Such distribution channels receive photographic liquid from a relatively narrow feed conduit and spread it transversely so that it forms a liquid layer distributed across the bopper width when discharged from the slot. Distribution occurs due to the hopper's low resistance to transverse liquid flow and its high resistance to longitudinal flow toward the slot.
  • These distribution channels have been formed with a variety of cross-sectional configurations, including circular shapes (see, e.g.. U.S. Pat. No. 4,041,897 to Ade), semi-circular shapes (see, e.g..
  • ⁇ is the fluid viscosity
  • q is the flow rate per unit width (i.e. the flow rate at the secondary distribution channel inlet divided by width of the hopper perpendicular to the channel cross-section).
  • the Reynolds Number is generally about zero because of very high fluid viscosity. With such a low Reynolds Number, the primary function of the secondary distribution channel becomes merely the reduction of non-uniformity in fluid distribution resulting from imperfect hopper manufacture. However, when moderate Newtonian viscosity and/or high flow rates are encountered, as in the coating of photographic materials, such non-uniformity is more likely to occur due to variations in fluid parameters rather than imperfect hopper design. To ameliorate such non-uniformity, the cross-sectional area of the secondary distribution channel should be increased. This creates additional problems, however, including the onset of flow recirculation (i.e. eddying) within the secondary distribution channel, and sedimentation of solids in the liquid.
  • FIGS. 2A to D show fluid flow in a side cross-sectional view of a secondary distribution channel with a commonly-used semi-circular shape at Reynolds Numbers of 0, 10, 12, and 20, respectively.
  • This configuration is semi-circular in that the center of the circle lies in the plane of slot-forming wall 200 of hopper plate 202.
  • fluid traveling along the path defined by arrow F enters the channel and travels along the depicted paths.
  • eddies in the secondary distribution channel may entrap foreign materials in the coating solution during purge flow conditions (i.e., at high Reynolds Numbers used to remove flush water and/or air from the channel). These materials may then be released into the flow stream at coating conditions (i.e., at lower Reynolds Numbers) and may re-lodge on the walls of the hopper downstream of the eddying region (e.g., at the slot for that liquid, on the slide, or on the coating lip). This can generate streaks in the product which is unacceptable for high quality products. As a result, the hopper must be periodically shut down and purged to remove particles. This procedure increases waste and diminishes product output.
  • Eddies in the flow field during coating are also known to increase dramatically the residence time of that portion of the solution caught in the recirculating zone. In photographic liquids with time dependent chemical reactions, this may cause the resulting product to have a more non-uniform composition which does not meet specifications.
  • FIGS. 3A to D show fluid flow in a side cross-sectional view of a secondary distribution channel with a circular segment shape at Reynolds Numbers of 0, 15, 18, and 20, respectively.
  • This segment is less than 180° so that the center of a full circle containing this segment lies within hopper plate 302 somewhat distal from slot-forming wall 300.
  • FIGS. 3A to D show fluid flow in a side cross-sectional view of a secondary distribution channel with a circular segment shape at Reynolds Numbers of 0, 15, 18, and 20, respectively.
  • This segment is less than 180° so that the center of a full circle containing this segment lies within hopper plate 302 somewhat distal from slot-forming wall 300.
  • FIGS. 3A to D show no eddy at a Reynolds Number of 0 (FIG. 3A).
  • a minor eddy develops (FIG. 3B).
  • Major eddying and a yet larger eddy appear at Reynolds Numbers of 18 and 20, respectively, as shown in FIGS. 3C and 3D, respectively.
  • FIGS. 3A to D A comparison of FIGS. 3A to D with FIGS. 2A to D shows that the onset of flow recirculation is postponed to a higher Reynolds number with the circular segment configuration of FIGS. 3A to D.
  • the use of a circular segment configuration achieves only a modest delay of eddying and reduces the cross-sectional area of the secondary distribution channel, which, in turn, diminishes its ability to reduce non-uniformities. As a result, the need for a properly configured secondary distribution channel continues to exist.
  • the present invention relates to a fluid conditioning system, particularly useful in conjunction with a coating hopper for applying photographic liquid coatings on a web of paper or film.
  • This system includes both primary and secondary distribution channels with an interconnecting transverse slot between them, a conduit for feeding liquid to the primary distribution channel, and a transverse slot for removing liquid from the secondary distribution channel.
  • the secondary distribution channel is configured to delay eddy formation to a Reynolds Number above that at which eddies would normally form in secondary distribution channels of different configuration, while maintaining a relatively large cross-sectional area.
  • the secondary distribution channel is able to produce a transversely uniform pressure in the coating liquid without formation of significant eddies at Reynolds Numbers up to 50. This is achieved by configuring the secondary distribution channel to be deeper near its exit than near its entrance by providing it with an inlet expansion angle less than the exit contraction angle of the channel.
  • the fluid conditioning system is formed between adjacent layering plates or between the curtain-forming plate and its adjacent layering plate. This system supplies photographic liquids to the inclined slide surface of the hopper so that a pack of discrete liquid layers may be formed. This pack is then applied to a web of photographic film or paper as a curtain.
  • the present invention is also useful in conjunction with a coating hopper which operates by the bead coating principle.
  • FIG. 1 is a side cross-sectional view of a curtain coating slide hopper in accordance with the present invention.
  • FIGS. 2A, 2B, 2C, and 2D show fluid flow for side cross-sectional views of a secondary distribution channel having a semi-circular configuration at Reynolds numbers of 0, 10, 12, and 20, respectively.
  • FIGS. 3A, 3B, 3C, and 3D show fluid flow for side cross-sectional views of a secondary distribution channel having a circular segment configuration at Reynolds Numbers of 0, 15, 18, and 20, respectively.
  • FIGS. 4A, 4B, 4C, and 4D show fluid flow for side cross-sectional views of secondary distribution channel 36 of FIG. 1, having a configuration in accordance with the present invention, at Reynolds Numbers of 0, 30, 35, and 40, respectively.
  • FIG. 5 is a side cross-sectional view of an alternative embodiment of a secondary distribution channel having a configuration in accordance with the present invention.
  • FIG. 1 is a side cross-sectional view of a photographic liquid coating slide hopper 2 in accordance with the present invention.
  • Slide hopper 2 includes layering plates 4, 6, and 8 and curtain-forming plate 10.
  • Layering plates 6 and 8 and curtain-forming plate 10 have upper planar surfaces 42, 44, and 46, respectively, which together form a wide incline at an angle of from 5 to 20 degrees, preferably 15 degrees, from horizontal.
  • Protruding from the end of curtain-forming plate 10 which is distal from the layering plates is vertical lip 50.
  • the spaces between layering plates 4, 6, and 8 and between layering plate 8 and curtain-forming plate 10 form passages for supplying photographic liquids to the incline formed by upper planar surfaces 42, 44, and 46.
  • this passage which extends transversely to hopper side 2 (i.e. into and out of FIG. 1), is defined by the space between layering Plates 4 and 6 and includes primary distribution channel 24, intermediate passage 30, secondary distribution channel 36, and slot 12, all of which extend transversely across hopper 2.
  • Liquid T is fed to primary distribution channel 24 by feed conduit 18 which has a central or side location relative to the transverse extent of channel 24 across the width of hopper 2.
  • middle liquid M the space between layering plates 6 and 8, defined by primary distribution channel 26, intermediate passage 32, secondary distribution channel 38, and slot 14, all of which extend transversely across hopper 2, constitutes the passage.
  • Liquid M is supplied to primary distribution channel 26 by feed conduit 20 which is located centrally or at the end of the transverse extent of channel 26.
  • Bottom liquid B's passage is between layering plate 8 and curtain-forming plate 10 and includes primary distribution channel 28, intermediate passage 34, secondary distribution channel 40, and slot 16, all extending transversely across hopper 2.
  • Feed conduit 22 supplies liquid B to primary distribution channel 28 and has a central or side location with respect to the transverse extent of channel 28 across the width of hopper 2.
  • the primary and secondary distribution channels reduce the resistance to transverse flow of liquid across hopper 2, while a high resistance to longitudinal flow is maintained by the intermediate passages and slots, respectively.
  • liquid layers flowing onto the incline defined by planar surfaces 42, 44, and 46 are spread to a suitable width and have a high level of uniformity due to the substantial reduction in pressure variation achieved by the distribution channels.
  • top liquid T is discharged from slot 12 onto planar surface 42.
  • middle liquid M is deposited on and in contact with planar surface 44 beneath top liquid T.
  • bottom liquid B is deposited on and in contact with planar surface 46 of curtain-forming plate 10 beneath middle liquid M and top liquid T.
  • FIG. 1 depicts primary distribution channels 24, 26, and 28 as having a semi-circular configuration
  • these channels can also have any configuration conventionally used for primary distribution channels, including circular, semi-circular, circular segment, rectangular, and triangular shapes.
  • surface 54 of layering plate 4 which defines in-part primary distribution channel 24, intermediate passage 30, secondary distribution channel 36, and slot 12 can be substantially planar. This is likewise true for the fluid passage systems for middle liquid M and bottom liquid B with respect to layering plates 6 and 8, respectively.
  • top liquid T is fed through feed conduit 18, primary distribution channel 24, intermediate passage 30, secondary distribution channel 36, and slot 12 to planar surface 42 of layering plate 6.
  • Middle liquid M is conveyed through feed conduit 20, primary distribution channel 26, intermediate passage 32, secondary distribution channel 38, and slot 14 and is brought into contact with planar surface 44 beneath the layer of top liquid T.
  • Bottom liquid B is charged through feed conduit 22, primary distribution channel 28, intermediate passage 34, secondary distribution channel 40, and slot 16 into contact with planar surface 46.
  • the layer formed by liquid B is positioned below the separate and discrete layers formed by liquids T and M.
  • the aggregate of layered liquids T, M, and B advances downwardly along planar surface 46, transition section 48, and lip 50 without substantial interlayer mixing.
  • the secondary distribution channel configured in accordance with the present invention can be incorporated into a multiple-slide hopper used in curtain coating.
  • this secondary distribution channel configuration can be utilized in conjunction with other systems for coating photographic liquids on webs of photographic film or paper.
  • the secondary distribution channel of the present invention can be utilized in conjunction with a bead coating hopper, having one or more multiple slides.
  • FIGS. 4A to D show fluid flow for side cross-sectional views of secondary distribution channel 36 of FIG. 1, having a configuration in accordance with the present invention at Reynolds Numbers of 0, 30, 35, and 40, respectively.
  • Secondary distribution channels 38 and 40 of FIG. 1 should be similarly configured. Note that the cross-section in FIG. 1 is viewed from the opposite direction of those FIGS. 4A to D.
  • the second distribution channel of the present invention has an inlet expansion angle ⁇ which is less than the outlet contraction angle ⁇ .
  • the inlet expansion angle should be 10 to 80 degrees, more preferably 25 to 35 degrees.
  • the outlet contraction angle is usually 40 to 90 degrees, more preferably 80 to 90 degrees.
  • the secondary distribution channel is defined by inlet expansion surface 402, outlet contraction surface 404, and transition surface 406 which substantially connects surfaces 402 and 404 and defines the deepest portion of the secondary distribution channel.
  • Inlet expansion angle ⁇ is defined by planar surface 54 and a line tangential to inlet expansion surface 402, while outlet contraction angle ⁇ is defined by planar surface 54 and a line tangential to outlet contraction surface 404.
  • FIGS. 4A to D show the tangential lines to inlet expansion surface 402 and outlet contraction surface 404 being very close to where the secondary distribution channel begins and ends, respectively. However, the requirement that the inlet expansion angle be less than the outlet contraction angle should be true for the ⁇ and ⁇ values defined by all lines tangential to surfaces 402 and 404, respectively, which extend to the deepest portion of the secondary distribution channel--transition surface 406.
  • Transition surface 406 is substantially parallel to the opposite planar surface 54 which is the lefthand most edge of layering plate 4 in FIG. 1. Planar surface 54 also defines one surface of primary distribution channel 24, intermediate passage 30, and slot 12 for the passages carrying liquid T.
  • the distribution systems for liquids B and M in FIG. 1 may be similarly configured.
  • FIGS. 4A, 4B, 4C and 4D show the flow patterns achieved for Reynolds Numbers of 0, 30, 35 and 40, respectively.
  • FIG. 4A at a Reynolds Number 0, there are no eddies created.
  • FIG. 4B When the Reynolds Number is increased to 30, as shown in FIG. 4B, there is still no eddying.
  • Some minor eddying begins at a Reynolds Number of 35, as shown in FIG. 4C, but only when a Reynolds Number of 40 is reached, as in FIG. 4D, does any significant eddying occur.
  • FIG. 4D shows eddying at a Reynolds Number of up to 40, it is possible to delay the onset of such eddying up to and beyond Reynolds Numbers of 50 by reducing the inlet expansion angle below that shown in FIG. 4D to a value of less than 25 degrees.
  • FIGS. 4A to 4D A comparison of FIGS. 4A to 4D with FIGS. 2A to 2D and FIGS. 3A to 3D shows that a secondary distribution channel configuration in accordance with the present invention significantly delays the onset of eddying to a far higher Reynolds Number than is possible with secondary distribution channels having either circular segment or semi-circular configurations.
  • the secondary distribution channel of the present invention is thus able to handle fluid flows with Reynolds Numbers of up to 50.
  • FIG. 5 is a side cross-sectional view of an alternative embodiment of a secondary distribution channel having a configuration in accordance with the present invention.
  • the secondary distribution channel has expansion surfaces 502 and 502' extending from the inlet, and outlet contraction surfaces 504 and 504' leading to the outlet.
  • Transition surface 506 connects surfaces 502 and 504, while transition surface 506' joins surfaces 502 and 504'.
  • this embodiment of the secondary distribution channel has 2 inlet expansion angles ⁇ and ⁇ ' and 2 outlet contraction angles ⁇ and ⁇ '. Inlet expansion angles ⁇ and ⁇ ' are formed between imaginary line Z and lines tangent to surfaces 502 and 502', respectively.
  • outlet expansion angles ⁇ and ⁇ ' are formed between imaginary line Y and lines tangent to surfaces 504 and 504', respectively. Again, inlet expansion angles ⁇ and ⁇ ' must be less than outlet contraction angles ⁇ and ⁇ ', respectively. However, ⁇ and ⁇ ' need not be equal, nor must ⁇ and ⁇ ' be the same.
  • the secondary distribution channel of the present invention is able to discharge a uniformly distributed and homogeneous photographic liquid. This results in a higher quality coated photographic film or paper.
  • the present invention has production benefits, because the need to stop operations and purge impurities from the secondary distribution channel is substantially diminished due to its reduced eddying character.
  • the secondary distribution channel configuration of the present invention is thus a substantial advance in photographic coating technology.
  • the benefits of the present invention are not, however, limited to a photographic utility. It has widespread usefulness in any application where fluid conditioning is required.
  • the fluid conditioning system of the present invention can be employed in the manufacture of magnetic oxide coatings, adhesive coatings, or other solvent coating procedures.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
US07/766,945 1991-09-27 1991-09-27 Liquid distribution system for photographic coating device Expired - Lifetime US5234500A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US07/766,945 US5234500A (en) 1991-09-27 1991-09-27 Liquid distribution system for photographic coating device
CA002076276A CA2076276C (en) 1991-09-27 1992-08-17 Liquid distribution system for photographic coating device
AU21151/92A AU655050B2 (en) 1991-09-27 1992-08-20 Liquid distribution system for photographic coating device
DE69225185T DE69225185T2 (de) 1991-09-27 1992-09-14 Flüssigkeitverteilungssystem für photographische Beschichtungsvorrichtung
EP92420313A EP0534869B1 (en) 1991-09-27 1992-09-14 Liquid distribution system for photographic coating device
BR929203725A BR9203725A (pt) 1991-09-27 1992-09-24 Aparelhagem de condicionamento de fluidos,dispositivo de recobrimento adaptado para aplicar uma ou mais camadas de liquidos fotograficos sobre uma folha continua de suporte de filme ou papel,e,alimentador de corredica de recobrimento adaptado para aplicar uma serie de camadas separadas e discretas de recobrimentos liquidos fotograficos sobre uma folha continua de papel ou filme
MX9205485A MX9205485A (es) 1991-09-27 1992-09-25 Sistema de distribucion de liquido para aparato de revestimiento fotografico
JP04256726A JP3118095B2 (ja) 1991-09-27 1992-09-25 写真用被覆装置のための液体分布装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/766,945 US5234500A (en) 1991-09-27 1991-09-27 Liquid distribution system for photographic coating device

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US5234500A true US5234500A (en) 1993-08-10

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US07/766,945 Expired - Lifetime US5234500A (en) 1991-09-27 1991-09-27 Liquid distribution system for photographic coating device

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US (1) US5234500A (ja)
EP (1) EP0534869B1 (ja)
JP (1) JP3118095B2 (ja)
AU (1) AU655050B2 (ja)
BR (1) BR9203725A (ja)
CA (1) CA2076276C (ja)
DE (1) DE69225185T2 (ja)
MX (1) MX9205485A (ja)

Cited By (18)

* Cited by examiner, † Cited by third party
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US5395653A (en) * 1994-03-24 1995-03-07 Eastman Kodak Company Apparatus and method for controlling coating frowns in hopper coating
US5505995A (en) * 1995-02-02 1996-04-09 Minnesota Mining And Manufacturing Company Method and apparatus for coating substrates using an air knife
US5506000A (en) * 1995-02-02 1996-04-09 Minnesota Mining And Manufacturing Company Slot coating method and apparatus
US5525376A (en) * 1995-02-02 1996-06-11 Minnesota Mining And Manufacturing Company Multiple layer coating method
US5593734A (en) * 1993-03-12 1997-01-14 Eastman Kodak Company Multiple inlet flow distributor for liquids
US5641544A (en) * 1995-02-02 1997-06-24 Minnesota Mining And Manufacturing Company Method and apparatus for applying thin fluid coatings
US5733608A (en) * 1995-02-02 1998-03-31 Minnesota Mining And Manufacturing Company Method and apparatus for applying thin fluid coating stripes
WO1999059731A2 (en) 1998-05-19 1999-11-25 Pankake Eugene A Pressure feed coating application system
US6350318B1 (en) 1998-12-17 2002-02-26 Eastman Kodak Company Optimized versatile coating hopper
US20030188839A1 (en) * 2001-04-14 2003-10-09 Robert Urscheler Process for making multilayer coated paper or paperboard
US20040121080A1 (en) * 2002-10-17 2004-06-24 Robert Urscheler Method of producing a coated substrate
US20050034659A1 (en) * 1998-05-19 2005-02-17 Pankake Eugene A Coating Apparatus and method
US20050039871A1 (en) * 2002-04-12 2005-02-24 Robert Urscheler Process for making coated paper or paperboard
US20050086567A1 (en) * 2003-10-16 2005-04-21 Robert Cronch Method and apparatus to improve magnetic disc drive reliability using excess un-utilized capacity
US7364774B2 (en) 2002-04-12 2008-04-29 Dow Global Technologies Inc. Method of producing a multilayer coated substrate having improved barrier properties
US20090295098A1 (en) * 1999-05-18 2009-12-03 Pankake Eugene A Coating apparatus and method
US20150190818A1 (en) * 2014-01-08 2015-07-09 Valmet Technologies, Inc. Coating Device for Applying Coating Color onto a Fiber Web and Method for Coating of a Fiber Web
WO2022065710A1 (ko) * 2020-09-25 2022-03-31 주식회사 엘지에너지솔루션 매니폴드가 개선된 다중 슬롯 다이 코터

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US5733608A (en) * 1995-02-02 1998-03-31 Minnesota Mining And Manufacturing Company Method and apparatus for applying thin fluid coating stripes
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US20150190818A1 (en) * 2014-01-08 2015-07-09 Valmet Technologies, Inc. Coating Device for Applying Coating Color onto a Fiber Web and Method for Coating of a Fiber Web
US9649658B2 (en) * 2014-01-08 2017-05-16 Valmet Technologies, Inc. Coating device for applying coating color onto a fiber web and method for coating of a fiber web
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CN115427158A (zh) * 2020-09-25 2022-12-02 株式会社Lg新能源 具有改进的歧管的多狭缝模具涂布机
US11772119B2 (en) 2020-09-25 2023-10-03 Lg Energy Solution, Ltd. Multi-slot die coater with improved manifold
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CA2076276C (en) 1996-05-07
EP0534869B1 (en) 1998-04-22
AU655050B2 (en) 1994-12-01
CA2076276A1 (en) 1993-03-28
DE69225185T2 (de) 1998-10-22
JP3118095B2 (ja) 2000-12-18
BR9203725A (pt) 1993-04-20
AU2115192A (en) 1993-04-01
EP0534869A1 (en) 1993-03-31
JPH05200345A (ja) 1993-08-10
MX9205485A (es) 1993-03-01

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